Дослідження впливу кристалізації в електромагнітному полі на структурно-фазові характеристики евтектичного сплаву АК12М2 з підвищеним вмістом Fe ТА Mn

• Datum: 2023
• 1. Verfasser: Ворон, М. М.
• Format: Artikel
• Sprache: Ukrainian
• Veröffentlicht: National Academy of Sciences of Ukraine, Physical-Technological Institute of Metals and Alloys of NAS of Ukraine 2023
• Schlagworte: ливарні алюмінієві сплави; АК12М2; електромагнітна обробка розплаву; структура; властивості
• Online Zugang: https://plit-periodical.org.ua/index.php/plit/article/view/studying-effect-crystallization-electromagnetic-field-structural
• Назва журналу: Casting Processes

Physico-Techological institure of Metals and Alloys of NAS of Ukraine (Kyiv, Ukraine) УДК 669.71:538.6 The effect of crystallization duration in alternative magnetic af AlSi12Cu2 alloy melt with increased iron and manganese content on the formation of structural and phase characteristics of the material was studied. The aim of the research was to establish the possibility of eutectic transformation point displacement under the influence of electromagnetic influence. Also, the goal was to evaluate differences in the chemical composition of the aluminum-based solid solution in different samples and the difference in structure of their eutectic components. An increase in the content of manganese and iron in the alloy composition was foreseen to assess the probability of the manganese transition to solid solution from one side and to understand the influence of the selected method of physical treatment on the change in the size and structure of iron-containing phases. Based on the obtained data, optimal duration of melt electromagnetic treatment and it was 8 seconds, which is equal to a third of the duration until complete crystallization. A longer duration of melt electromagnetic treatment during crystallization process led to negative effects in the form of a heterogeneous structure and large accumulations of iron-containing phases eutectic Al15 (Fe,Mn)3Si2 phases. In all cases, the treatment of the melt did not lead to significant changes in additional alloying of solid solution. The effect was obtained only in the influence on the structure, which is associated with transfer and distribution of crystallization centers and the averaging of temperature field in the volume of the metal during crystallization. Thus, short-duration electromagnetic treatment can be effectively used to pre-treat the melt before casting.   References 1. Bayliss C. The Aluminium Story. 2019 Light Metals Keynote Session: Aluminum Industry: Vision for the Next Decade. San Antonio, Texas. March 10-14, 2019. 41 p.2. Varshney D., Kumar K. Application and use of different aluminium alloys with respect to workability, strength and welding parameter optimization. Ain Shams Engineering Journal. 2021. Vol. 12 (1). pp. 1143-1152.3. Rajan R., Kah P., Mvola B., Martikainen J. Trends in aluminium alloy development and their joining methods. Reviews on Materials Science. 2016. Vol. 4 (44). pp. 383-397.4. Green J.A. Aluminum Recycling and Processing for Energy Conservation and Sustainability. ASM International. 2007. P. 198.5. Awe S., Seifeddine S., Jarfors A., Lee Y., Dahle, A. Development Of New Al-Cu-Si Alloys For High Temperature Performance. Advanced Materials Letters. 2017. Vol. 8 (6). рр. 695-701.6. Pantelakis Sp. et al. Creep resistance of aluminium alloys for next generation supersonic civil transport aircrafts. Theoretical and applied fracture mechanics. 1999. №31. рр. 31-39.7. Davis J.R. Alloying: Understanding the Basics, Aluminum and Aluminum Alloys. Cleveland, OH.: ASTM International. 2001. P. 647.8. Easton M. and StJohn D. Grain Refinement of Aluminum Alloys, Part I. The Nucleant and Solute Paradigms, Review of the Literature. Metall. And Mater. Trans. A. 1999. Vol. 30 (6). pp. 1613 – 1623.9. Crossley F.A., Mondolfo L.F. Mechanism of grain refinement in aluminium alloys. Trans. AIME. Journal of metals. 1951. Vol. 191. pp. 1143 – 1154.10. Le Brun P. Melt Treatment – Evolution and Perspectives. In: Grandfield, J.F., Eskin, D.G. (eds) Essential Readings in Light Metals. 2016. Springer, Cham. pp. 6-8.11. Puga H., Costa S., Barbosa J. Influence of ultrasonic melt treatment on microstructure and mechanical properties of AlSi9Cu3 alloy. J. Mater. Proc. Technol. 2011. Vol. 211. рр. 1729–1735.12. Murakami Y., Li M., Matsui I., Omura N. Microstructure refinement of 7150 aluminum alloy ingot with rectangular section by applying forward-reverse electromagnetic stirring. Journal of Japan Institute of Light Metals. 2019. Vol. 69(1). pp. 30-35.